Audited Playback Verification
Every slot. Every screen. Cryptographically verified.
DOOOOH Proof of Play combines hardware telemetry, HMAC device signatures, and sub-second timestamps into a tamper-resistant delivery audit.
Verification Protocol
Zero Audience Surveillance • Pure Delivery ProofThe Lifecycle of an Ad Playback Event
STAGE 01
Booked
Campaign slots confirmed with locked commercial snapshot.
STAGE 02
Scheduled
Hardware loop schedule compiled and cached on edge device.
STAGE 03
Played
Slot rendered on screen down to sub-second duration accuracy.
STAGE 04
Verified
Device HMAC signature checked against registered screen credentials.
STAGE 05
Reconciled
Billable delivery recorded and matched with owner payout batch.
DOOOOH_PLAYOUT_VERIFICATION_LOG
PROTOCOL: SECURE_TELEMETRY•STATUS: RECONCILED
// Playout execution telemetry record
{
"playoutId": "pop_9a87f2e18d7b",
"screenId": "1chnrPPfWggMRWiCZKJG",
"campaignId": "cmp_summit_2026_launch",
"startTimestampMs": 1772605200000,
"durationRenderedSeconds": 10.00,
"playbackStatus": "RENDERED_SUCCESS",
"deviceSignature": "hmac-sha256:7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069",
"reconciliationStatus": "BILLABLE_MATCH_CONFIRMED"
}
Timestamp PrecisionSub-second Start/End
Device AuthenticationHMAC Signature
Privacy StandardZero Biometrics
Settlement LinkReconciled Delivery
Playout Telemetry
Each playback device reports slot-level start and completion timestamps to the central verification engine.
Sub-Second Precision
Playout duration is validated against scheduled slot lengths with sub-second accuracy.
Hardware Authentication
Every delivery event is signed with device authentication keys to ensure authenticity.